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ISO 182-2:1990

Plastics — Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures — Part 2: pH method

Dec 13, 1990

General information

90.20     Apr 15, 2025

ISO

ISO/TC 61/SC 9

International Standard

83.080.20  

French   English  

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Scope

May be used as a quality-control test during manufacture and conversion of PVC compounds and for coloured compounds. Is not recommended for compounds in the form of dry blends. Defines the stability time. The principle consists in exposing a sample of the material at an agreed temperature in a gas stream, followed by absorption of the hydrogen chloride evolved in a 0.1 mol/l solution of sodium chloride. The amount of hydrogen chloride evolved is measured by recording the change in pH of the sodium chloride solution. Figures show the general arrangement of apparatus and details of the dehydrochlorination cell. Together with three other parts of ISO 182, cancels and replaces ISO Recommendation R 182:1970.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO/R 182:1970

NOW

PUBLISHED
ISO 182-2:1990
90.20 Standard under periodical review
Apr 15, 2025

REVISED BY

ABANDON
ISO/DIS 182-2

National adoptions

SRPS EN ISO 182-2:2012  
ISS

Plastics - Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures - Part 2: pH method (ISO 182-2:1990)

90.92   Standard to be revised

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